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Top Forums Shell Programming and Scripting Problem with reading characters Post 302397435 by albertogarcia on Monday 22nd of February 2010 11:56:03 AM
Old 02-22-2010
Thank you to all.

Later I will test the solutions. Now, (in my work) I have ksh but not (and is impossible to install) bash...
thank you again.

This is a great forum.

---------- Post updated at 05:56 PM ---------- Previous update was at 12:50 PM ----------

No, the problem continues....

If I code this:
Code:
#!/bin/bash

cat leerfichero.sh | while read linea
do
   echo ""
   echo "$linea" | while read -n 1 caracter
   do
      echo -n "$caracter"
   done
done

I get:
Code:
:
~$ bash leerfichero.sh 

#!/bin/bash

catleerfichero.sh|whilereadlinea
do
echo""
echo"$linea"|whileread-n1caracter
do
echo-n"$caracter"
done

The same result with the other opcion:

Code:
:~/shell/ejercicios$ bash leerfichero.sh 

#!/bin/bash

catleerfichero.sh|whilereadlinea
do
echo""
echo"$linea"|whileread-n1caracter
do
echo-n"$caracter"
done

I don't understand!
 

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shells(4)							   File Formats 							 shells(4)

NAME
shells - shell database SYNOPSIS
/etc/shells DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser- shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root. A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines which search the file. Blank lines are also ignored. The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list. Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1). FILES
/etc/shells list of shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.11 20 Nov 2007 shells(4)
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